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Long-term Debt (Revolving Credit Facility) (Narrative) (Details) | 9 Months Ended
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Jun. 30, 2017 USD ($) tranche
Line of Credit Facility [Line Items] |
Total issued letters of credit | $ 38,300,000
Number of tranches in revolving credit facility (in tranches) | tranche | 2
Minimum |
Line of Credit Facility [Line Items] |
Facility fee percentage | 0.10%
Maximum |
Line of Credit Facility [Line Items] |
Facility fee percentage | 0.25%
Letter of Credit |
Line of Credit Facility [Line Items] |
Credit facility, maximum borrowing capacity | $ 300,000,000
Eurocurrency Interest Rate | Minimum |
Line of Credit Facility [Line Items] |
Margin added to variable rate interest rate (percentage) | 1.00%
Eurocurrency Interest Rate | Maximum |
Line of Credit Facility [Line Items] |
Margin added to variable rate interest rate (percentage) | 1.50%
Base Interest Rate | Minimum |
Line of Credit Facility [Line Items] |
Margin added to variable rate interest rate (percentage) | 0.00%
Base Interest Rate | Maximum |
Line of Credit Facility [Line Items] |
Margin added to variable rate interest rate (percentage) | 0.50%
Sub Facility Of Swing Line Loans |
Line of Credit Facility [Line Items] |
Credit facility, maximum borrowing capacity | $ 50,000,000
2014 Facility |
Line of Credit Facility [Line Items] |
Available borrowing capacity | 1,300,000,000
2014 Facility | Revolving Credit Facility |
Line of Credit Facility [Line Items] |
Credit facility, maximum borrowing capacity | 1,600,000,000
Credit facility, potential borrowing capacity | 2,100,000,000
Direct borrowings on credit facility | 282,000,000
2014 Facility | Letter of Credit |
Line of Credit Facility [Line Items] |
Direct borrowings on credit facility | 2,500,000
Committed And Uncommitted Letter Of Credit Facility | Letter of Credit |
Line of Credit Facility [Line Items] |
Direct borrowings on credit facility | $ 35,800,000

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- Definition Number of Tranches in Revolving Credit Facility + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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